fixed typos

epicardium/epicardium.h

@@ -300,7 +300,7 @@ API(API_THERMISTOR_VOLTAGE, int epic_read_thermistor_voltage(float *result));
  * - A CDC-ACM device available via USB.
  * - Maybe, in the future, bluetooth serial?
  *
- * :param str:  Strmng to write.  Does not necessarily have to be NULL-terminated.
+ * :param str:  String to write.  Does not necessarily have to be NULL-terminated.
  * :param length:  Amount of bytes to print.
  */
 API(API_UART_WRITE_STR, void epic_uart_write_str(
@@ -1401,7 +1401,7 @@ API(API_DISP_BACKLIGHT, int epic_disp_backlight(uint16_t brightness));
 /**
  * open a popup with the argument text and return the answer of the user
  * :param confirmString: pointer to the string of the question
- * :return: ``0`` on agree or -1 in case of the user disagreeing:
+ * :return: ``0`` on agree or ``-1`` in case of the user disagreeing:
  * */
 API(API_CONFIRM, int epic_confirm(const char *confirmString));
 
@@ -1417,7 +1417,6 @@ API(API_CONFIRM, int epic_confirm(const char *confirmString));
  *
  *      - ``-EBUSY``: The timer could not be scheduled.
  */
-
 API(API_LIGHT_SENSOR_RUN, int epic_light_sensor_run());
 
 /**